1 files changed, 468 insertions, 0 deletions

diff --git a/drivers/media/dvb/pt1/va1j5jf8007t.c b/drivers/media/dvb/pt1/va1j5jf8007t.c
new file mode 100644
index 000000000000..71117f4ca7e6
--- /dev/null
+++ b/drivers/media/dvb/pt1/va1j5jf8007t.c
@@ -0,0 +1,468 @@
+/*
+ * ISDB-T driver for VA1J5JF8007
+ *
+ * Copyright (C) 2009 HIRANO Takahito <hiranotaka@zng.info>
+ *
+ * based on pt1dvr - http://pt1dvr.sourceforge.jp/
+ *      by Tomoaki Ishikawa <tomy@users.sourceforge.jp>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include "dvb_frontend.h"
+#include "dvb_math.h"
+#include "va1j5jf8007t.h"
+
+enum va1j5jf8007t_tune_state {
+        VA1J5JF8007T_IDLE,
+        VA1J5JF8007T_SET_FREQUENCY,
+        VA1J5JF8007T_CHECK_FREQUENCY,
+        VA1J5JF8007T_SET_MODULATION,
+        VA1J5JF8007T_CHECK_MODULATION,
+        VA1J5JF8007T_TRACK,
+        VA1J5JF8007T_ABORT,
+};
+
+struct va1j5jf8007t_state {
+        const struct va1j5jf8007t_config *config;
+        struct i2c_adapter *adap;
+        struct dvb_frontend fe;
+        enum va1j5jf8007t_tune_state tune_state;
+};
+
+static int va1j5jf8007t_get_frontend_algo(struct dvb_frontend *fe)
+{
+        return DVBFE_ALGO_HW;
+}
+
+static int
+va1j5jf8007t_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+        struct va1j5jf8007t_state *state;
+
+        state = fe->demodulator_priv;
+
+        switch (state->tune_state) {
+        case VA1J5JF8007T_IDLE:
+        case VA1J5JF8007T_SET_FREQUENCY:
+        case VA1J5JF8007T_CHECK_FREQUENCY:
+                *status = 0;
+                return 0;
+
+
+        case VA1J5JF8007T_SET_MODULATION:
+        case VA1J5JF8007T_CHECK_MODULATION:
+        case VA1J5JF8007T_ABORT:
+                *status |= FE_HAS_SIGNAL;
+                return 0;
+
+        case VA1J5JF8007T_TRACK:
+                *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
+                return 0;
+        }
+
+        BUG();
+}
+
+struct va1j5jf8007t_cb_map {
+        u32 frequency;
+        u8 cb;
+};
+
+static const struct va1j5jf8007t_cb_map va1j5jf8007t_cb_maps[] = {
+        {  90000000, 0x80 },
+        { 140000000, 0x81 },
+        { 170000000, 0xa1 },
+        { 220000000, 0x62 },
+        { 330000000, 0xa2 },
+        { 402000000, 0xe2 },
+        { 450000000, 0x64 },
+        { 550000000, 0x84 },
+        { 600000000, 0xa4 },
+        { 700000000, 0xc4 },
+};
+
+static u8 va1j5jf8007t_lookup_cb(u32 frequency)
+{
+        int i;
+        const struct va1j5jf8007t_cb_map *map;
+
+        for (i = 0; i < ARRAY_SIZE(va1j5jf8007t_cb_maps); i++) {
+                map = &va1j5jf8007t_cb_maps[i];
+                if (frequency < map->frequency)
+                        return map->cb;
+        }
+        return 0xe4;
+}
+
+static int va1j5jf8007t_set_frequency(struct va1j5jf8007t_state *state)
+{
+        u32 frequency;
+        u16 word;
+        u8 buf[6];
+        struct i2c_msg msg;
+
+        frequency = state->fe.dtv_property_cache.frequency;
+
+        word = (frequency + 71428) / 142857 + 399;
+        buf[0] = 0xfe;
+        buf[1] = 0xc2;
+        buf[2] = word >> 8;
+        buf[3] = word;
+        buf[4] = 0x80;
+        buf[5] = va1j5jf8007t_lookup_cb(frequency);
+
+        msg.addr = state->config->demod_address;
+        msg.flags = 0;
+        msg.len = sizeof(buf);
+        msg.buf = buf;
+
+        if (i2c_transfer(state->adap, &msg, 1) != 1)
+                return -EREMOTEIO;
+
+        return 0;
+}
+
+static int
+va1j5jf8007t_check_frequency(struct va1j5jf8007t_state *state, int *lock)
+{
+        u8 addr;
+        u8 write_buf[2], read_buf[1];
+        struct i2c_msg msgs[2];
+
+        addr = state->config->demod_address;
+
+        write_buf[0] = 0xfe;
+        write_buf[1] = 0xc3;
+
+        msgs[0].addr = addr;
+        msgs[0].flags = 0;
+        msgs[0].len = sizeof(write_buf);
+        msgs[0].buf = write_buf;
+
+        msgs[1].addr = addr;
+        msgs[1].flags = I2C_M_RD;
+        msgs[1].len = sizeof(read_buf);
+        msgs[1].buf = read_buf;
+
+        if (i2c_transfer(state->adap, msgs, 2) != 2)
+                return -EREMOTEIO;
+
+        *lock = read_buf[0] & 0x40;
+        return 0;
+}
+
+static int va1j5jf8007t_set_modulation(struct va1j5jf8007t_state *state)
+{
+        u8 buf[2];
+        struct i2c_msg msg;
+
+        buf[0] = 0x01;
+        buf[1] = 0x40;
+
+        msg.addr = state->config->demod_address;
+        msg.flags = 0;
+        msg.len = sizeof(buf);
+        msg.buf = buf;
+
+        if (i2c_transfer(state->adap, &msg, 1) != 1)
+                return -EREMOTEIO;
+
+        return 0;
+}
+
+static int va1j5jf8007t_check_modulation(struct va1j5jf8007t_state *state,
+                                         int *lock, int *retry)
+{
+        u8 addr;
+        u8 write_buf[1], read_buf[1];
+        struct i2c_msg msgs[2];
+
+        addr = state->config->demod_address;
+
+        write_buf[0] = 0x80;
+
+        msgs[0].addr = addr;
+        msgs[0].flags = 0;
+        msgs[0].len = sizeof(write_buf);
+        msgs[0].buf = write_buf;
+
+        msgs[1].addr = addr;
+        msgs[1].flags = I2C_M_RD;
+        msgs[1].len = sizeof(read_buf);
+        msgs[1].buf = read_buf;
+
+        if (i2c_transfer(state->adap, msgs, 2) != 2)
+                return -EREMOTEIO;
+
+        *lock = !(read_buf[0] & 0x10);
+        *retry = read_buf[0] & 0x80;
+        return 0;
+}
+
+static int
+va1j5jf8007t_tune(struct dvb_frontend *fe,
+                  struct dvb_frontend_parameters *params,
+                  unsigned int mode_flags,  unsigned int *delay,
+                  fe_status_t *status)
+{
+        struct va1j5jf8007t_state *state;
+        int ret;
+        int lock, retry;
+
+        state = fe->demodulator_priv;
+
+        if (params != NULL)
+                state->tune_state = VA1J5JF8007T_SET_FREQUENCY;
+
+        switch (state->tune_state) {
+        case VA1J5JF8007T_IDLE:
+                *delay = 3 * HZ;
+                *status = 0;
+                return 0;
+
+        case VA1J5JF8007T_SET_FREQUENCY:
+                ret = va1j5jf8007t_set_frequency(state);
+                if (ret < 0)
+                        return ret;
+
+                state->tune_state = VA1J5JF8007T_CHECK_FREQUENCY;
+                *delay = 0;
+                *status = 0;
+                return 0;
+
+        case VA1J5JF8007T_CHECK_FREQUENCY:
+                ret = va1j5jf8007t_check_frequency(state, &lock);
+                if (ret < 0)
+                        return ret;
+
+                if (!lock)  {
+                        *delay = (HZ + 999) / 1000;
+                        *status = 0;
+                        return 0;
+                }
+
+                state->tune_state = VA1J5JF8007T_SET_MODULATION;
+                *delay = 0;
+                *status = FE_HAS_SIGNAL;
+                return 0;
+
+        case VA1J5JF8007T_SET_MODULATION:
+                ret = va1j5jf8007t_set_modulation(state);
+                if (ret < 0)
+                        return ret;
+
+                state->tune_state = VA1J5JF8007T_CHECK_MODULATION;
+                *delay = 0;
+                *status = FE_HAS_SIGNAL;
+                return 0;
+
+        case VA1J5JF8007T_CHECK_MODULATION:
+                ret = va1j5jf8007t_check_modulation(state, &lock, &retry);
+                if (ret < 0)
+                        return ret;
+
+                if (!lock)  {
+                        if (!retry)  {
+                                state->tune_state = VA1J5JF8007T_ABORT;
+                                *delay = 3 * HZ;
+                                *status = FE_HAS_SIGNAL;
+                                return 0;
+                        }
+                        *delay = (HZ + 999) / 1000;
+                        *status = FE_HAS_SIGNAL;
+                        return 0;
+                }
+
+                state->tune_state = VA1J5JF8007T_TRACK;
+                /* fall through */
+
+        case VA1J5JF8007T_TRACK:
+                *delay = 3 * HZ;
+                *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
+                return 0;
+
+        case VA1J5JF8007T_ABORT:
+                *delay = 3 * HZ;
+                *status = FE_HAS_SIGNAL;
+                return 0;
+        }
+
+        BUG();
+}
+
+static int va1j5jf8007t_init_frequency(struct va1j5jf8007t_state *state)
+{
+        u8 buf[7];
+        struct i2c_msg msg;
+
+        buf[0] = 0xfe;
+        buf[1] = 0xc2;
+        buf[2] = 0x01;
+        buf[3] = 0x8f;
+        buf[4] = 0xc1;
+        buf[5] = 0x80;
+        buf[6] = 0x80;
+
+        msg.addr = state->config->demod_address;
+        msg.flags = 0;
+        msg.len = sizeof(buf);
+        msg.buf = buf;
+
+        if (i2c_transfer(state->adap, &msg, 1) != 1)
+                return -EREMOTEIO;
+
+        return 0;
+}
+
+static int va1j5jf8007t_set_sleep(struct va1j5jf8007t_state *state, int sleep)
+{
+        u8 buf[2];
+        struct i2c_msg msg;
+
+        buf[0] = 0x03;
+        buf[1] = sleep ? 0x90 : 0x80;
+
+        msg.addr = state->config->demod_address;
+        msg.flags = 0;
+        msg.len = sizeof(buf);
+        msg.buf = buf;
+
+        if (i2c_transfer(state->adap, &msg, 1) != 1)
+                return -EREMOTEIO;
+
+        return 0;
+}
+
+static int va1j5jf8007t_sleep(struct dvb_frontend *fe)
+{
+        struct va1j5jf8007t_state *state;
+        int ret;
+
+        state = fe->demodulator_priv;
+
+        ret = va1j5jf8007t_init_frequency(state);
+        if (ret < 0)
+                return ret;
+
+        return va1j5jf8007t_set_sleep(state, 1);
+}
+
+static int va1j5jf8007t_init(struct dvb_frontend *fe)
+{
+        struct va1j5jf8007t_state *state;
+
+        state = fe->demodulator_priv;
+        state->tune_state = VA1J5JF8007T_IDLE;
+
+        return va1j5jf8007t_set_sleep(state, 0);
+}
+
+static void va1j5jf8007t_release(struct dvb_frontend *fe)
+{
+        struct va1j5jf8007t_state *state;
+        state = fe->demodulator_priv;
+        kfree(state);
+}
+
+static struct dvb_frontend_ops va1j5jf8007t_ops = {
+        .info = {
+                .name = "VA1J5JF8007 ISDB-T",
+                .type = FE_OFDM,
+                .frequency_min = 90000000,
+                .frequency_max = 770000000,
+                .frequency_stepsize = 142857,
+                .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO |
+                        FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
+                        FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
+        },
+
+        .get_frontend_algo = va1j5jf8007t_get_frontend_algo,
+        .read_status = va1j5jf8007t_read_status,
+        .tune = va1j5jf8007t_tune,
+        .sleep = va1j5jf8007t_sleep,
+        .init = va1j5jf8007t_init,
+        .release = va1j5jf8007t_release,
+};
+
+static const u8 va1j5jf8007t_prepare_bufs[][2] = {
+        {0x03, 0x90}, {0x14, 0x8f}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2},
+        {0x22, 0x83}, {0x31, 0x0d}, {0x32, 0xe0}, {0x39, 0xd3}, {0x3a, 0x00},
+        {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x02}, {0x76, 0x4e}, {0x77, 0x03},
+        {0xef, 0x01}
+};
+
+int va1j5jf8007t_prepare(struct dvb_frontend *fe)
+{
+        struct va1j5jf8007t_state *state;
+        u8 buf[2];
+        struct i2c_msg msg;
+        int i;
+
+        state = fe->demodulator_priv;
+
+        msg.addr = state->config->demod_address;
+        msg.flags = 0;
+        msg.len = sizeof(buf);
+        msg.buf = buf;
+
+        for (i = 0; i < ARRAY_SIZE(va1j5jf8007t_prepare_bufs); i++) {
+                memcpy(buf, va1j5jf8007t_prepare_bufs[i], sizeof(buf));
+                if (i2c_transfer(state->adap, &msg, 1) != 1)
+                        return -EREMOTEIO;
+        }
+
+        return va1j5jf8007t_init_frequency(state);
+}
+
+struct dvb_frontend *
+va1j5jf8007t_attach(const struct va1j5jf8007t_config *config,
+                    struct i2c_adapter *adap)
+{
+        struct va1j5jf8007t_state *state;
+        struct dvb_frontend *fe;
+        u8 buf[2];
+        struct i2c_msg msg;
+
+        state = kzalloc(sizeof(struct va1j5jf8007t_state), GFP_KERNEL);
+        if (!state)
+                return NULL;
+
+        state->config = config;
+        state->adap = adap;
+
+        fe = &state->fe;
+        memcpy(&fe->ops, &va1j5jf8007t_ops, sizeof(struct dvb_frontend_ops));
+        fe->demodulator_priv = state;
+
+        buf[0] = 0x01;
+        buf[1] = 0x80;
+
+        msg.addr = state->config->demod_address;
+        msg.flags = 0;
+        msg.len = sizeof(buf);
+        msg.buf = buf;
+
+        if (i2c_transfer(state->adap, &msg, 1) != 1) {
+                kfree(state);
+                return NULL;
+        }
+
+        return fe;
+}